I was not referring to how it should be rather just how it is. I like history but in reality not everyone does and not everyone bothers to study it. We complain bout their lack of interest in politics or history but they might complain about our lack in interest in other subjects. That is just a reality of a population. Who knows how many people were interviewed though. Maybe they talked to a 100 people and only showed the ones who gave uneducated answers?

I wouldn't jump to say it is lies in the education system, I would suspect the media more than the education system.

"Those that cannot remember the past are condemned to repeat it." G. Santayana  { Though some mistakenly attribute this to Churchill }

Revisionist history is taught throughout our public education system, assuming they teach "History" at all. For the most part they don't. They teach "Social Studies" which only pays lip service to history as it relates to "Culture". The failure to teach our children the cold hard facts about things like the Holocaust, National Socialism, Stalin and Marxism, Mao and Communism, have led us to where we are today. Millions of idiot young adults that think socialism is the way of the future. The attitudes of liberals towards conservatives says it all, they would see us put to death, after the fashion of Hitler, Stalin, and Mao's killing of hundreds of millions of dissenters, and feel righteous about it. We see it every day, on the internet where they wish death upon us for supporting the 2nd Amendment. In the media, with their tacit support of things like the "Black Lives Matter" movement that encourages the killing of whites. These people now represent almost half the population, and they would gleefully cheer and chant slogans while they watched us hang.

We don't teach our kids history because they "want" to learn it, but because they need to.

"Those that cannot remember the past are condemned to repeat it." G. Santayana  { Though some mistakenly attribute this to Churchill }

Revisionist history is taught throughout our public education system, assuming they teach "History" at all. For the most part they don't. They teach "Social Studies" which only pays lip service to history as it relates to "Culture". The failure to teach our children the cold hard facts about things like the Holocaust, National Socialism, Stalin and Marxism, Mao and Communism, have led us to where we are today. Millions of idiot young adults that think socialism is the way of the future. The attitudes of liberals towards conservatives says it all, they would see us put to death, after the fashion of Hitler, Stalin, and Mao's killing of hundreds of millions of dissenters, and feel righteous about it. We see it every day, on the internet where they wish death upon us for supporting the 2nd Amendment. In the media, with their tacit support of things like the "Black Lives Matter" movement that encourages the killing of whites. These people now represent almost half the population, and they would gleefully cheer and chant slogans while they watched us hang.

We don't teach our kids history because they "want" to learn it, but because they need to.

I don't disagree with you but a school has so many subjects to teach that something is going to get left out. You can either cover lots of topics with little depth or a few topics in depth. So really, some of the burden relies on the individual to go out and learn more. Sifting through the information takes a lot of time and understanding however this is true of many subjects one can study whether it be history, science, art, etc. No one has time to have a complete understanding of all subjects relevant to our life so we rely on sources to synopsize information for us.

I would hesitate to have a school teach about political ideologies though as anything but basic tenants would seem to inevitably become biased in one direction or the other.

I doubt 95 % of Americans, old or young, educated or uneducated, could answer that question (why terrorists attacked us on 9/11) articulately, accurately or consistently.
It's not just current college students. 

You're basically saying that, in 12-13 years of K-12 public or private school, there is no time to teach actual US history?

Maybe if the Hawaii schools spent more class time teaching US history instead of hula and 4 years of Hawaiian History and Culture, they could squeeze in some topics that make just as much, if not more, impact on the kids' futures?   This school system has their priorities reversed.  There should be more world and US subject matter and less Hawaii cultural class time.  The grads have to compete for jobs and live in places where there are those educated outside of Hawaii.  It's shortsighted to think a Hawaii cultural education is going to prepare them for life in a global community.  I grew up in a region with a lot of Native American tribes, but I didn't learn tribal customs and dances in school -- that was what Boy Scouts was for!!